Improved performance of perovskite light-emitting diodes using a PEDOT:PSS and MoO3 composite layer

Da Bin Kim, Jae Choul Yu, Yun Seok Nam, Dae Woo Kim, Eui Dae Jung, Sang Yun Lee, Seungjin Lee, Jong Hyun Park, Ah Young Lee, Bo Ram Lee, Daniele Di Nuzzo, Richard H. Friend, Myoung Hoon Song

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Abstract

We demonstrate the enhanced performance of perovskite light-emitting diodes (PeLEDs) using a solution-processable MoO3 and PEDOT:PSS (PEDOT:MoO3) composite layer as the hole transport layer (HTL). The PEDOT:MoO3 composite layer presents improved hole injection through a reduction in the contact barrier between the HTL and the CH3NH3PbBr3 layer and enhanced crystallinity of the perovskite film. The optimized PeLEDs with the PEDOT:MoO3 composite film showed enhanced external quantum efficiency (EQE) and maximum luminous efficiency, compared to a PeLED using a pristine PEDOT:PSS layer.

Original languageEnglish
Pages (from-to)8161-8165
Number of pages5
JournalJournal of Materials Chemistry C
Volume4
Issue number35
DOIs
Publication statusPublished - 21 Sep 2016
Externally publishedYes

Cite this

Kim, D. B., Yu, J. C., Nam, Y. S., Kim, D. W., Jung, E. D., Lee, S. Y., Lee, S., Park, J. H., Lee, A. Y., Lee, B. R., Di Nuzzo, D., Friend, R. H., & Song, M. H. (2016). Improved performance of perovskite light-emitting diodes using a PEDOT:PSS and MoO3 composite layer. Journal of Materials Chemistry C, 4(35), 8161-8165. https://doi.org/10.1039/c6tc02099b